#ifndef __lexical_h__
#define __lexical_h__ 1
#include <sstream>
#include "common.h"
namespace lexical {
class bad_cast {};
template <typename T>
T cast(const string& s, bool tolerant=false)
{
istringstream is(s);
T value;
if(is && is >> value && ((is >> std::ws).eof() || tolerant)) return value;
throw bad_cast();
}
}
#endif
